With upwards of 25mm of rain expected to fall overnight in most parts of the GTA, that is going to add water to an already saturated ground.
And you may wake up to some water in your basement, if you're unlucky or unprepared.
President of Bosco Home Services, Roberto Luongo says at this point, the only thing you can do to prevent a flood, is to make sure there's no snow piled up around your foundation.
He says the rain will quickly melt that snow, and the water will run down the outside of your foundation and likely end up in your basement.
But he says you can shovel that snow away, to help prevent water from getting in.
Luongo also suggests making sure your downspouts are clear and not frozen, so the water coming off your roof, will be pushed away from your house.
But really, when it comes down to it, there's really not much you can do at this... the 11th hour before a storm.
He suggests getting waterproofing work done on your home, when the weather is nice, so you're not scrambling the next time it rains heavily.
Luongo also says if your basement DOES flood, if the water goes over the gas valve on your furnace, you'll have to get a new furnace.